Can somebody please provide a light on which sect does the monk on 4:19Min belongs? He seems to be a Nichiren Buddhist, and is also chanting Daimoku while doing takigyo under the waterfall, but also uses a garb that resembles that used by Yamabushi sect! What sect is this one?

I wonder if his hand mudra while chanting is characteristic? I see the Nichiren statue on his altar, perhaps thats a 4 statue configuration.

The same mudra is used in both Shinto and Yamabushi waterfall purification practices! He is chanting the daimoku and also features Nichiren Shonin in his altar, but chants Fudo mantra while blessing the devotee! Wonder from which sect he comes from?!